To date we have NEVER had a slimline collar snap or break. These extra strong collars are very hardwearing, durable and because of their slim width are ideal for puppies and small dogs. No aspect of detail has been ignored in designing and producing these collars. If you take a closer look the collar has in overlap for added strength yet it's slimline design means it can be worn by almost any dog. The fittings are solid steel, even the holes are re-inforced by stainless steel eyelets and your dog is secured and safe. These collars are lightweight, well built and excellent value for money, ideal for small strong dogs on the go!